The NAM has shifted west with precipitation, and is largely coming in line with the Euro. We still have notable discrepancies that must be dealt with through tonight. However, the NAM now showing widespread .2" to .4" water equivalents across SNE is a very good sign. Verbatim, we would be looking at a 1 - 3 inch snowfall in Keene (better than the 06z NAM showed). With these inverted trough type events, we often times have to deal with a decent west to east snowfall gradient. So small shifts will be crucial.
Timing --- Here's how the progression of events looks right now:
An initial band of moderate snow extends up from the SW, with eastward forward motion, and pushes through tonight around midnight. Accumulations will be between .5" to 1.0"
Inverted trough develops during the day Tuesday and moves northward. Light snow will overspread the region in the afternoon and evening, with moderate snow possible eastward on the Cape. Precipitation will pull away from the region Tuesday night, ending in Keene by midnight, and wrapping up on the coast later Wednesday morning.
Total accumulations of 1 to 3 expected north and west of a Hartford to Worcester to Manchester line, with accumulations of 2 to 4 inches southeast of the line. Amounts of 3 to 6 inches will be possible inside of I95.
|posted by Sam Lillo @ 2/02/2009 09:53:00 AM
